MSI V2 Socket AM3+/AMD 990FX/DDR3/CrossFireX and 3-Way SLI/SATA3 and USB 3.0/A and GbE/ATX Motherboard 990FXA-GD80 V2 CPU: Socket AM3+/ AM3 Memory: 4x DDR3-2133(OC)/ 1800(OC)/ 1600/ 1333/ 1066/ 800 DIMM Slots, Dual Channel, Unbuffered, Max Capacity of 32GB Slots: 4x PCI-Express 2.0 x16 Slots, 2x PCI-Express 2.0 x1 Slots, 1x PCI Slot SATA: 6x SATA3 Ports Ports: 4x USB 3.0 Ports (2 rear, 2 via header), 8x USB 2.0 Ports (4 rear, 4 via headers),2x eSATA/USB 2.0 Combo, 1x PS/2 keyboard Port, 1x PS/2 Mouse Port, 1x IEEE1394 Port, 1x Coaxial SPDIF-out, 1x Optical SPDIF-out, 1x RJ45 LAN Port, Audio I/O Jacks Form Factor: ATX CPU: Socket AM3+; Supports 64bit AMD Phenom II X8/X6/X4/X3/X2, Athlon II X4/X3/X2 and Sempron Processors; Supports HyperTransport 3.0 speeds up to 5200 MT/s Chipset: North Bridge AMD 990FX & South Bridge SB950 Memory: 4x 240pin DDR3-2133(OC)/1800/1600/1333/1066/800 DIMM Slots, Dual Channel, Unbuffered, Max Capacity up to 32GB Slots: 4x PCI-Express 2.0 x16 Slots (one runs at x8, one runs at x4); 2x PCI-Express 2.0 x1 Slots; 1x 3.3V/5V PCI Slot SATA: 6x SATA3 Ports, Support RAID 0, 1, 5, 10 Ports: 8x USB 2.0 Ports (4 rear, 4 by headers); 3x USB 3.0 Ports ( 2 at the back panel and 1 onboard); 1x PS/2 Keyboard Port; 1x PS/2 Mouse Port; 2x eSATA/USB 2.0 Combo Ports; 1x Optical SPDIF out; 1x Coaxial SPDIF out; 1x RJ45 LAN Port; Audio I/O Jacks Power Connector: 1x 24pin ATX Power Connector, 1x 8pin ATX 12VPower Connector